For this discovery, Libby received the Nobel Prize in Chemistry in Before this, it was anyone's guess how different digs' timelines compared to one another over great distances. Danforth and S. The impact of the radiocarbon dating technique on modern man has made it one of the most significant discoveries of the 20th century. The abundance and stability of C 12 make it an 14 dating Who developed carbon reference point for comparing with its unstable isotope C When the animal or plant dies, it stops exchanging carbon with its environment, and from that point onwards the amount of 14C it contains begins to reduce as the 14C undergoes radioactive decay. Over time, however, the number of unstable parent nuclei of C 14 decreases. Haynes, Vance. The interpretation of data in the field of archaeology is often subjected to intense scrutiny. By dating man-made artifacts from Europe, the Americas, Asia, Africa and Oceania, archaeologists established that civilizations 14 dating Who developed carbon in many independent sites across the world.